@media only screen and (min-width: 320px) and (max-width: 640px) {
  .table {
    width: 100%;
    height: 3.4rem;
    background: url("../../../../assets/images/field_table_bg.png") 100% 100% no-repeat;
    background-size: cover;
  }
  .field {
    width: 100%;
  }
  .field .knowledge {
    box-sizing: border-box;
    padding: 0 0.3rem;
    margin: 0 auto;
  }
  .field .knowledge .knowledge_list {
    font-size: 0.16rem;
    margin-top: 0.5rem;
  }
  .field .knowledge .folding {
    margin-top: 0.6rem;
    font-size: 0.28rem;
    text-align: left;
    padding-bottom: 0.55rem;
  }
  .field .knowledge .folding .folding_title {
    width: 1.5rem;
    height: 0.54rem;
    line-height: 0.54rem;
    text-align: center;
    font-size: 0.24rem;
    box-sizing: border-box;
    padding: 0 0.13rem;
    color: #a9171f;
    border-bottom: 0.01rem solid #eaeaea;
    position: relative;
  }
  .field .knowledge .folding .folding_title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 0.04rem;
    background: #a9171f;
  }
  .field .knowledge .folding .folding_item {
    cursor: pointer;
    width: 100%;
    border-radius: 0.04rem;
    box-sizing: border-box;
    padding-left: 0.24rem;
    font-size: 0.26rem;
    height: 0.9rem;
    color: #666;
    background: #f8f8f8;
    margin-top: 0.26rem;
    display: table;
    position: relative;
  }
  .field .knowledge .folding .folding_item::after {
    content: "";
    display: block;
    position: absolute;
    left: 0.1rem;
    top: 50%;
    margin-top: -0.04rem;
    width: 0.08rem;
    height: 0.08rem;
    border-radius: 50%;
    background: #a9171f;
  }
  .field .knowledge .folding .folding_item div {
    width: calc(100% - 0.24rem);
    height: 0.9rem;
    display: table-cell;
    vertical-align: middle;
  }
  .details {
    box-sizing: border-box;
    padding: 0 0.3rem;
    position: relative;
    font-size: 0.16rem;
  }
  .details h1 {
    height: 1.07rem;
    font-size: 0.3rem;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #333;
    text-align: center;
    box-sizing: border-box;
  }
  .details .return {
    width: 100%;
    height: 1rem;
    line-height: 1rem;
    text-align: right;
    cursor: pointer;
    padding-right: 0.3rem;
    top: 0.4rem;
    font-size: 0.16rem;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #666;
  }
  .details .return img {
    width: 0.07rem;
    height: 0.13rem;
  }
  .details .content {
    width: 100%;
    font-size: 0.16rem;
    padding-bottom: .3rem;
  }
}

@media only screen and (min-width: 641px) and (max-width: 1199px) {
  .two_nav .item_box {
    padding: 0 50px;
  }
  .field {
    width: 100%;
  }
  .field .table {
    width: 100%;
    height: 442px;
    background: url("../../../../assets/images/field_table_bg.png") 100% 100% no-repeat;
    background-size: cover;
  }
  .field .knowledge {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: flex-start;
  }
  .field .knowledge .knowledge_list {
    flex: 1;
    margin: 20px;
    margin-right: 24px;
    font-size: 16px;
    margin-top: 20px;
  }
  .field .knowledge .folding {
    max-width: 274px;
    font-size: 18px;
    text-align: left;
  }
  .field .knowledge .folding .folding_title {
    height: 54px;
    line-height: 54px;
    text-align: left;
    font-size: 24px;
    box-sizing: border-box;
    padding: 0 13px;
    color: #a9171f;
    background: #f7f7f7;
  }
  .field .knowledge .folding .folding_item {
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
    padding: 0 10px 0 24px;
    font-size: 16px;
    height: 67px;
    line-height: 30px;
    color: #656565;
    background: #f7f7f7;
    margin-top: 1px;
    display: table;
  }
  .field .knowledge .folding .folding_item div {
    display: table-cell;
    vertical-align: middle;
    position: relative;
  }
  .field .knowledge .folding .folding_item div::after {
    content: "";
    display: block;
    position: absolute;
    left: -15px;
    top: 50%;
    margin-top: -4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #a9171f;
  }
  .field .knowledge .folding .folding_active {
    color: #aa171f;
    border-top: 4px solid #aa171f;
    background: rgba(170, 23, 31, 0.16);
  }
  .fieldDetails .table {
    background: url("../../../../assets/images/field_table_bg.png") 100% 100% no-repeat;
    background-size: cover;
  }
  .details {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    font-size: 16px;
  }
  .details h1 {
    height: 107px;
    line-height: 107px;
    font-size: 20px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #333;
    text-align: center;
    box-sizing: border-box;
    padding-right: 100px;
  }
  .details .return {
    cursor: pointer;
    width: 100px;
    position: absolute;
    right: 0;
    top: 40px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #666;
  }
  .details .return img {
    width: 7px;
    height: 13px;
  }
  .details .content {
    width: 100%;
    font-size: 16px;
    padding-bottom: 30px;
  }
  .field .knowledge {
    margin: 0 30px;
    display: flex;
  }
  .field .knowledge .knowledge_list {
    flex: 1;
  }
  .field .knowledge .folding {
    width: 200px;
  }
}

@media screen and (min-width: 1200px) {
  .two_nav .item_box {
    padding: 0 50px;
  }
  .field {
    width: 100%;
  }
  .field .table {
    width: 100%;
    height: 442px;
    background: url("../../../../assets/images/field_table_bg.png") 100% 100% no-repeat;
    background-size: cover;
  }
  .field .knowledge {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: flex-start;
  }
  .field .knowledge .knowledge_list {
    flex: 1;
    margin: 20px;
    margin-right: 24px;
    font-size: 16px;
    margin-top: 20px;
  }
  .field .knowledge .folding {
    max-width: 274px;
    font-size: 18px;
    text-align: left;
  }
  .field .knowledge .folding .folding_title {
    height: 54px;
    line-height: 54px;
    text-align: left;
    font-size: 24px;
    box-sizing: border-box;
    padding: 0 13px;
    color: #a9171f;
    background: #f7f7f7;
  }
  .field .knowledge .folding .folding_item {
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
    padding: 0 10px 0 24px;
    font-size: 16px;
    height: 67px;
    line-height: 30px;
    color: #656565;
    background: #f7f7f7;
    margin-top: 1px;
    display: table;
  }
  .field .knowledge .folding .folding_item div {
    display: table-cell;
    vertical-align: middle;
    position: relative;
  }
  .field .knowledge .folding .folding_item div::after {
    content: "";
    display: block;
    position: absolute;
    left: -15px;
    top: 50%;
    margin-top: -4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #a9171f;
  }
  .field .knowledge .folding .folding_active {
    color: #aa171f;
    border-top: 4px solid #aa171f;
    background: rgba(170, 23, 31, 0.16);
  }
  .fieldDetails .table {
    background: url("../../../../assets/images/field_table_bg.png") 100% 100% no-repeat;
    background-size: cover;
  }
  .details {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    font-size: 16px;
  }
  .details h1 {
    height: 107px;
    line-height: 107px;
    font-size: 20px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #333;
    text-align: center;
    box-sizing: border-box;
    padding-right: 100px;
  }
  .details .return {
    cursor: pointer;
    width: 100px;
    position: absolute;
    right: 0;
    top: 40px;
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #666;
  }
  .details .return img {
    width: 7px;
    height: 13px;
  }
  .details .content {
    width: 100%;
    font-size: 16px;
    padding-bottom: 30px;
  }
}
